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NEST2024PhysicsGravitation

A planet of mass m is in uniform circular motion about a star of mass M(M m) . Let v , L and r be the velocity, angular momentum and position vector, respectively of the planet about the star. We define a vector A = v L . Then

Options

  1. AA is a zero vector.
  2. Bthe magnitude of A is G M^2 / m .
  3. CA is in a plane perpendicular to the plane of the planet's orbit.
  4. DA is along r .

Correct answer

D. A is along r .

Step-by-step solution

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